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1.
Int. j. morphol ; 38(2): 444-447, abr. 2020. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1056460

RESUMO

This study was undertaken to determine the morphometry of the piriform aperture width and height in Turkish population aged between 18-60 years. It was a retrospective study in which 200 subjects were included 106 males and 94 females, ranging from 18 up to 60 years. Subjects having brain CT in the Radiology Department. Statistical analysis were evaluated with SPSS 21.00 programme. ANOVA Test were used to determine the significance between measurements and age group. The p<0.05 value was considered as significant. The groups were divided into four groups according to age. The overall means and standard deviations of the measurements were: piriform aperture height, 45.19±2.91 mm; piriform aperture width, 24.98±2.85 mm; the golden ratio, 1.84±0.19 in males, respectively whereas, the same measurements were 42.84±2.88; 23.46±2.15 mm; 1.83±0.19 in females, respectively. Also there were an increase in piriform aperture width measurement as the age increased. These anatomical values provides more important knowledge to determine the dimensions of these structures in clinic, surgical processes.


El estudio se realizó para determinar la morfometría del ancho y la altura de la abertura piriforme en la población turca de entre 18 y 60 años. Se llevó a cabo un análisis retrospectivo en el que se incluyeron 200 sujetos 106 hombres y 94 mujeres, entre los 18 y 60 años. Sujetos con TC cerebral en el Departamento de Radiología. El análisis estadístico se evaluó con el programa SPSS 21.00. La prueba ANOVA se utilizó para determinar la importancia entre las mediciones y el grupo de edad. El valor p <0,05 se consideró significativo. La muestra se dividió en cuatro grupos según la edad. Las medias generales y las desviaciones estándar de las mediciones fueron: altura de apertura piriforme, 45,19 ± 2,91 mm; ancho de apertura piriforme, 24,98 ± 2,85 mm; la proporción áurea, 1,84 ± 0,19 en varones, mientras que las mismas medidas fueron 42,84 ± 2,88; 23,46 ± 2,15 mm; 1,83 ± 0,19 en mujeres. También hubo un aumento en la medición del ancho de apertura piriforme a medida que la edad aumentó. Estos valores anatómicos proporcionan un conocimiento más importante para determinar las dimensiones de estas estructuras en procesos clínicos y quirúrgicos.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Cavidade Nasal/diagnóstico por imagem , Turquia , Tomografia Computadorizada por Raios X , Estudos Retrospectivos , Análise de Variância , Cavidade Nasal/anatomia & histologia
2.
J Comput Assist Tomogr ; 44(1): 70-74, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31939885

RESUMO

PURPOSE: The aim of this study was to determine the valuable magnetic resonance imaging (MRI) features of sinonasal metastatic clear-cell renal cell carcinoma (cc-RCC), especially focusing on its dynamic-enhanced characteristics. METHODS: The conventional and dynamic-enhanced MRI findings of 8 patients with histopathologically confirmed sinonasal metastatic cc-RCC were reviewed by 2 radiologists. The control group of 8 patients with capillary hemangioma underwent the same MRI protocol. RESULTS: Metastatic cc-RCCs arose from the nasoethmoid region, maxillary sinus, posterior ethmoid and sphenoid sinus, and nasal cavity in 2 patients in each. These lesions were well circumscribed and the mean maximum dimension was 42 mm. The signal intensity of these lesions was isointense to brain stem on both MR T1- and T2-weighted images. All metastatic tumors showed vivid enhancement on enhanced T1-weighted image. Multiple flow voids within these metastatic lesions were identified in 6 patients. Peripheral cyst was detected around the metastatic tumor in 4 patients. Metastatic cc-RCCs exhibited a characteristic type 4 time intensity curve (TIC) similar to that of the internal carotid artery, whereas capillary hemangiomas showed a type 3 TIC on dynamic-enhanced MRI. CONCLUSIONS: A hypervascular mass with the characteristic type 4 TIC in the sinonasal region is highly suggestive of a metastatic cc-RCC.


Assuntos
Carcinoma de Células Renais/diagnóstico por imagem , Neoplasias Renais/diagnóstico por imagem , Cavidade Nasal/patologia , Neoplasias dos Seios Paranasais/diagnóstico por imagem , Neoplasias dos Seios Paranasais/secundário , Idoso , Carcinoma de Células Renais/patologia , Detecção Precoce de Câncer , Feminino , Humanos , Neoplasias Renais/patologia , Imagem por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Cavidade Nasal/diagnóstico por imagem , Neoplasias dos Seios Paranasais/patologia , Período Pré-Operatório , Intensificação de Imagem Radiográfica
3.
Ann R Coll Surg Engl ; 102(2): e45-e47, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31538802

RESUMO

Parapharyngeal infections carry a significant risk of extensive suppuration and airway compromise. We report the case of a patient presenting with a right paranasopharyngeal abscess, featuring atypical symptoms that made diagnosis particularly challenging. Complications included evidence of right vocal cord paralysis, likely secondary to involvement of the vagus nerve. Notably, this paralysis occurred in isolation, without involvement of cranial nerves IX or XI, which would be expected from jugular foramen encroachment. Imaging demonstrated the presence of a collection extending towards the skull base, which was drained using a transnasal endoscopic approach, avoiding the use of external incisions. Tissue biopsies from the abscess wall suggest that the underlying aetiology was minor salivary gland sialadenitis, which has not been previously reported in the literature.


Assuntos
Abscesso/etiologia , Doenças Faríngeas/etiologia , Sialadenite/complicações , Paralisia das Pregas Vocais/etiologia , Abscesso/diagnóstico , Abscesso/cirurgia , Adolescente , Biópsia , Drenagem , Endoscopia , Feminino , Humanos , Imagem por Ressonância Magnética , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/patologia , Nasofaringe/diagnóstico por imagem , Nasofaringe/patologia , Doenças Faríngeas/diagnóstico , Doenças Faríngeas/cirurgia , Nervo Laríngeo Recorrente/diagnóstico por imagem , Glândulas Salivares Menores/patologia , Sialadenite/diagnóstico , Sialadenite/patologia , Base do Crânio/diagnóstico por imagem , Base do Crânio/patologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Paralisia das Pregas Vocais/diagnóstico
4.
World Neurosurg ; 134: e422-e431, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31655241

RESUMO

BACKGROUND: Endoscopic endonasal approaches to access the sellar and parasellar regions are challenging in the face of anatomical variations or pathologic conditions. We propose an anatomically-based model including the orbitosellar line (OSL), critical oblique foramen line (COFL), and paramedial anterior line (PAL) facilitating safe, superficial-to-deep dissection triangulating upon the medial opticocarotid recess. METHODS: Five cadaveric heads were dissected to systematically expose the OSL, COFL, and PAL, illustrated with image guidance. Application of the coordinate system and a 6-step dissection sequence is described. RESULTS: The coordinate system consists of 1) the OSL, connecting a) the anterior orbital point, junction of the anterior buttress of the middle turbinate with the agger nasi region, located 34.3 ± 0.9 mm above the intersection of the vertical plane of the lacrimal crest, and the orthogonal plane of the maxillo-ethmoidal suture; b) the posterior orbital point, junction of the optic canal with the lamina papyracea, located 4 ± 0.7 mm below the posterior ethmoidal artery; and c) the medial opticocarotid recess; 2) COFL (15 ± 2.8 mm), connecting the palatovaginal canal, vidian canal, and foramen rotundum; and 3) PAL (39 ± 0.06 mm), connecting the vidian canal with the posterior ethmoidal artery. CONCLUSIONS: OSL, COFL, and PAL form an anatomically-based model for the systematic exposure when accessing the parasellar and sellar regions. Preliminary anatomical data suggest that this model may be of value when normal anatomy is distorted by pathology or anatomic variations.


Assuntos
Cavidade Nasal/anatomia & histologia , Neuroendoscopia/métodos , Neuronavegação/métodos , Base do Crânio/anatomia & histologia , Cadáver , Humanos , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/cirurgia , Base do Crânio/diagnóstico por imagem , Base do Crânio/cirurgia
5.
J Craniofac Surg ; 31(1): e65-e67, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31609950

RESUMO

Seromucinous hamartoma (SH) is a rarely seen benign polypoid mass of the sinonasal tract. Although the most common presentation symptom is nasal obstruction, most of the patients are asymptomatic. In this paper, the authors present an additional case of SH and discuss its differential diagnosis. A 34-year-old male patient presented with progressive nasal obstruction and serous nasal discharge for several months. A well-defined polypoid mass was detected in the left nasal cavity during the endoscopic assessment. Preoperative biopsy was reported as benign polypoid lesion. The mass was resected via transnasal endoscopic approach and final pathological examination was notified as SH.The SH is an uncommon tumor, originates from nasal septum in the most cases and presents as a well-circumscribed polypoid mass. Radiological imaging modalities and biopsy should be performed to distinguish from the sinonasal malignancies. Complete surgical excision is recommended treatment and recurrence is almost never.


Assuntos
Hamartoma/cirurgia , Cavidade Nasal/cirurgia , Adulto , Biópsia , Hamartoma/complicações , Hamartoma/diagnóstico por imagem , Humanos , Masculino , Cavidade Nasal/diagnóstico por imagem , Obstrução Nasal/etiologia , Septo Nasal/diagnóstico por imagem , Septo Nasal/cirurgia
6.
World Neurosurg ; 134: e277-e288, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31629927

RESUMO

BACKGROUND: In the last years, few reports have shown the feasibility of the endoscopic endonasal approach (EEA) for craniopharyngiomas in pediatric patients. For these tumors, recent studies have suggested less aggressive surgery, favoring the preservation of the patient's quality of life. OBJECTIVE: The aim of this study was to assess the outcome of the EEA in a large series with specific attention on the long-term functional sequelae. MATERIALS: All consecutive pediatric craniopharyngiomas operated on through this approach since 2000 were included in the study. Preoperative and postoperative operative clinical, radiologic, and pathologic features were retrieved from patient records (mean follow-up, 72 ± 67 months). RESULTS: The series included 25 patients (12 female; mean age, 8.9 ± 4.1 years). Most of the tumors presented with a supradiaphragmatic extension (88%). Removal was radical in 23 patients (92%). Complications consisted of 6 cerebrospinal fluid leaks (24%). One patient (4%) died of postoperative respiratory complications. Most patients (92%) developed panhypopituitarism and visual disturbances normalized or improved in 6 patients (43%). At follow-up, 9 patients (36%) were overweight/obese (6 were already overweight before surgery). The tumor recurrence rate was 19%. CONCLUSIONS: EEA can be an effective approach for midline craniopharyngiomas in children older than 3 years. It gives a satisfactory exposure of the suprasellar region and an adequate assessment of the brain-tumor interface. Its main limitations are age-related anatomic features of nasal/paranasal sinuses and the risk of cerebrospinal fluid leak.


Assuntos
Craniofaringioma/diagnóstico por imagem , Craniofaringioma/cirurgia , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/cirurgia , Neuroendoscopia/métodos , Procedimentos Neurocirúrgicos/métodos , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Masculino , Resultado do Tratamento
7.
J Forensic Sci ; 65(2): 372-379, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31573085

RESUMO

Standards for estimating mouth width and Cupid's bow width in craniofacial approximation and superimposition are limited. Currently, the only guideline for mouth width, using direct skeletal references, is a general rule indicating a 75% inter-canine to mouth width ratio. The philtrum, which closely corresponds to the Cupid's bow, is said to be equal to the inter-superior prominences of the maxillary central incisors. This study tested these guidelines against newly generated regression models and mean values. Cone-beam CT scans of 120 black and 39 white southern African adults were used. Comparative hard and soft tissue measurements were taken using a 3D DICOM viewer. Regression equations accounting population, sex, and approximate age variables (20-39 and 40+ years), utilizing maxillary inter-canine width to estimate mouth width and maxillary central-lateral incisor junction width to estimate Cupid's bow width, performed statistically best. The regression models were more reliable than existing standards in validation tests.


Assuntos
Lábio/anatomia & histologia , Boca/anatomia & histologia , Adulto , Grupo com Ancestrais do Continente Africano , Envelhecimento , Tomografia Computadorizada de Feixe Cônico , Grupo com Ancestrais do Continente Europeu , Antropologia Forense , Humanos , Imageamento Tridimensional , Lábio/diagnóstico por imagem , Maxila/anatomia & histologia , Maxila/diagnóstico por imagem , Boca/diagnóstico por imagem , Cavidade Nasal/anatomia & histologia , Cavidade Nasal/diagnóstico por imagem , Valores de Referência , Análise de Regressão , Reprodutibilidade dos Testes , África do Sul , Adulto Jovem
10.
Respir Physiol Neurobiol ; 271: 103304, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31546025

RESUMO

Inhalation exposure to airborne contaminants has adverse effects on humans; however, related research is typically conducted using in vivo/in vitro tests on animals. Extrapolating the test results is complicated by anatomical and physiological differences between animals and humans and a lack of understanding of the transport mechanism inside their respective respiratory tracts. This study determined the detailed air-flow structure in the upper airway of a monkey. A steady computational fluid dynamics simulation, which was validated by previous particle image velocimetry measurements, was adopted for flow rates of 4 L/min and 10 L/min to analyze the flow structure from the nasal/oral cavities to the trachea region in a monkey airway model. The low Reynolds number type k-ε model provided a reasonably accurate prediction of the airflow in a monkey upper airway. Furthermore, it was confirmed that large velocity gradients were generated in the nasal vestibule and larynx regions, as well as increased turbulent air kinetic energy and wall sheer stress.


Assuntos
Simulação por Computador , Hidrodinâmica , Cavidade Nasal/fisiologia , Tamanho da Partícula , Mecânica Respiratória/fisiologia , Reologia/métodos , Animais , Haplorrinos , Exposição por Inalação , Macaca fascicularis , Masculino , Boca/diagnóstico por imagem , Boca/fisiologia , Cavidade Nasal/diagnóstico por imagem
11.
BMJ Case Rep ; 12(11)2019 Nov 25.
Artigo em Inglês | MEDLINE | ID: mdl-31772133

RESUMO

Nasal fracture accounts for over 50% of facial fractures and is a frequent presentation to ear, nose and throat emergency clinics. Optimal management of nasal injuries with deformity is by manipulation under anaesthetic and should be offered when appropriate. A healthy 27-year-old woman presented with a lateral nasal wall mass with purulent discharge 1 month following manipulation. CT imaging revealed a mass arising from fragments of the nasal bone, consistent with an abscess. Bone fragments and purulent material were initially debrided, with a subsequent formal excision of a persistent granuloma performed with an excellent cosmetic outcome. This appears to be the first description of a granuloma resulting from a closed reduction-manipulation of a nasal fracture.


Assuntos
Redução Fechada/efeitos adversos , Ossos Faciais/microbiologia , Osso Nasal/microbiologia , Fraturas Cranianas/complicações , Abscesso/diagnóstico por imagem , Abscesso/patologia , Abscesso/cirurgia , Adulto , Desbridamento/métodos , Diagnóstico Diferencial , Ossos Faciais/patologia , Traumatismos Faciais/complicações , Traumatismos Faciais/patologia , Traumatismos Faciais/cirurgia , Feminino , Granuloma/etiologia , Granuloma/patologia , Granuloma/cirurgia , Humanos , Osso Nasal/patologia , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/patologia , Fraturas Cranianas/microbiologia , Fraturas Cranianas/cirurgia , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento
14.
J Craniofac Surg ; 30(7): 2202-2206, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31403514

RESUMO

PURPOSE: To propose a three-dimensional cephalometric analysis of upper airway (UA) related to its functionality, defining normal reference values in healthy individuals and the relationship between nostril, nasal valve, and minimal cross-sectional area (MCS) in functional upper airway. MATERIALS AND METHODS: The UAs of 20 Class I patients were analyzed with CBCT using Nemoceph 3D-OS and HOROS software, determining linear distances, volumes and cross-sectional areas, including MCS. RESULTS: MCS was mostly located in the middle-upper oropharynx and high hypopharynx. MCS showed moderate correlation with the area of both nares (BNA) (r = 0.60, P = 0.004) and high correlation with the area of both internal nasal valves (BNV) (r = 0.66, P = 0.0016). BNA and BNV showed a moderate correlation (r = 0.445, P = 0.049). A total upper airway (TUA) and functional upper airway (FUA) volumes were established. TUA and FUA showed the strongest statistical correlation (r = 0.82, P = 0.00). A paired samples t test compared the measurement as absolute values of MCS with BNA (t = 0.781, P = 0.44), with BNV (t = -0.12, P = 0.90); and BNA with BNV (t = -0.76, P = 0.45), showed no significant differences. CONCLUSIONS: A functional cephalometric analysis of the UA with stable parameters in cervical spine and normal reference values has been proposed. BNA and BNV could be used as reference to establish the MCS compatible with respiratory health.


Assuntos
Cavidade Nasal/diagnóstico por imagem , Nariz/diagnóstico por imagem , Adulto , Cefalometria/métodos , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Hipofaringe , Masculino , Orofaringe , Software
15.
Int J Pediatr Otorhinolaryngol ; 126: 109608, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31374389

RESUMO

OBJECTIVES: Congenital nasal pyriform aperture stenosis (CNPAS) is a rare cause of neonatal respiratory distress that is difficult to treat. The primary objective of this study was to identify factors that predict the need for initial and revision surgery for CNAPS. The secondary objective is to identify risk factors in maternal history associated with the development of CNPAS. METHODS: Infants with CNPAS between 2010 and 2017 were identified by ICD- 9 and 10 codes. Demographics, maternal history, anatomic features on imaging and medical and/or surgical management were reviewed. Frequencies, means and standard deviations were calculated. A p-value <.05 was considered significant. RESULTS: Twenty infants were included. All underwent flexible nasal endoscopy with inability to pass the scope in either nostril in 65% of infants. Nineteen had a CT scan and 13 had a MRI with midline defects in 76.3% and 53.8%, respectively. Solitary central mega-incisor was present in 65%. Half underwent surgical intervention at a mean age of 74.8 days, with 90% requiring revision surgery. There was no difference in pyriform aperture distance in the surgical and non-surgical patient subgroups (5.4 mm and 5.2 mm, p = .6 respectively). No specific variables were predictive of need for initial or revision surgery. Maternal diabetes mellitus (MDM) was found in 55% of mothers of infants with CNPAS. CONCLUSION: Pyriform aperture distance was not a predictor of surgical intervention. MRI should be considered in all infants with CNPAS as the rate of intracranial complications is high. MDM may be a risk factor for CNPAS.


Assuntos
Cavidade Nasal/anormalidades , Obstrução Nasal/congênito , Adolescente , Adulto , Diabetes Gestacional , Feminino , Humanos , Lactente , Recém-Nascido , Imagem por Ressonância Magnética , Masculino , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/cirurgia , Obstrução Nasal/diagnóstico por imagem , Obstrução Nasal/terapia , Gravidez , Gravidez em Diabéticas , Síndrome do Desconforto Respiratório do Recém-Nascido/etiologia , Síndrome do Desconforto Respiratório do Recém-Nascido/terapia , Estudos Retrospectivos , Stents , Tomografia Computadorizada por Raios X , Adulto Jovem
16.
BMJ Case Rep ; 12(8)2019 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-31377721

RESUMO

A 40-year-old female patient presented to ears, nose and throat complaining of cacosmia and discharge from the left maxillary sinus. Her CT scan revealed an ectopic supplemental nasal tooth which could not be removed by nasoendoscopy. Therefore, a conventional intraoral surgical approach was taken. In this case, we discuss the indications for conventional surgical removal of teeth from the nasal cavity when a nasoendoscopic approach is not possible. We highlight the potential pitfalls of both conventional and nasoendoscopic approaches, including some essential considerations when treatment planning these cases.


Assuntos
Cavidade Nasal/cirurgia , Dente Supranumerário/cirurgia , Adulto , Feminino , Humanos , Cavidade Nasal/diagnóstico por imagem , Transtornos do Olfato/etiologia , Tomografia Computadorizada por Raios X , Extração Dentária , Dente Supranumerário/diagnóstico por imagem , Resultado do Tratamento
17.
Tokai J Exp Clin Med ; 44(3): 59-67, 2019 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-31448398

RESUMO

OBJECTIVE: When evaluating nasal obstruction, conventional measurements of nasal patency do not necessarily correspond to a patient's subjective symptoms. The aim of this research is to seek an objective evaluation method by establishing computational modeling for nasal patency measurements. METHODS: We created a computer-generated geometrical model of the nasal cavity from computed-tomography scans of an adult male, presented a computational modeling method for evaluating the nasal patency in the deep-breathing state, and simulated numerically the airflow within the nasal cavity in the natural- and deep-breathing states. RESULTS: During inhalation in the natural-breathing state, the airflow was higher in the center of the nasal cavity and lower in the upper and lower portions, with the airflow characteristics being associated with the nasal functions. In the deep-breathing state, the computed nasal patency was compared with that measured experimentally by rhinomanometry. The quantitative accordance between computation and experiment was unsatisfactory, but the qualitative tendencies were similar. CONCLUSION: Through natural- and deep-breathing computations, the roles and functions of the olfactory region, nasal valve, and middle and inferior meatuses were evaluated from the flow patterns and pressure, with correlation to the nasal resistance and physiology. Above all, from the deep-breathing computation using the present computational modeling, it was deduced that the pressure difference is essential for determining the nasal sites at which the nasal resistance was produced. Thus, numerical simulation with computational modeling is potentially an objective method for evaluating nasal obstruction.


Assuntos
Resistência das Vias Respiratórias/fisiologia , Simulação por Computador , Modelos Anatômicos , Cavidade Nasal/fisiologia , Cavidade Nasal/fisiopatologia , Obstrução Nasal/diagnóstico , Obstrução Nasal/fisiopatologia , Ventilação Pulmonar/fisiologia , Respiração , Adulto , Humanos , Masculino , Cavidade Nasal/diagnóstico por imagem , Rinomanometria , Tomografia Computadorizada por Raios X
18.
BMJ Case Rep ; 12(8)2019 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-31451469

RESUMO

We present a rare and unusual case of a 16-year-old girl, with no significant medical history, presenting with right nasal obstruction and suspected sinusitis with occasional epistaxis and haemoptysis. On examination, she had a mass lesion in the right nasal cavity, with no evidence of other pathology on assessment of the ears, nose, throat or head and neck. A CT scan revealed an opacified right maxillary sinus with polypoidal mucosa, extending and passing through the accessory ostium into the right nasal cavity. Examination under anaesthesia with functional endoscopic sinus surgery and excision of the lesion was subsequently undertaken. Histological analysis confirmed the mass lesion as a haemangioma. This case report is the first to present a maxillary haemangioma presenting as nasal obstruction with intermittent sinusitis symptoms in a child. The authors discuss the incidence, presentation and management of maxillary haemangiomas in the paediatric population.


Assuntos
Hemangioma , Neoplasias do Seio Maxilar , Sinusite Maxilar , Obstrução Nasal/diagnóstico , Cirurgia Endoscópica por Orifício Natural/métodos , Adolescente , Diagnóstico Diferencial , Feminino , Hemangioma/patologia , Hemangioma/fisiopatologia , Hemangioma/cirurgia , Humanos , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/patologia , Neoplasias do Seio Maxilar/patologia , Neoplasias do Seio Maxilar/fisiopatologia , Sinusite Maxilar/diagnóstico , Sinusite Maxilar/etiologia , Cavidade Nasal/diagnóstico por imagem , Cavidade Nasal/patologia , Obstrução Nasal/etiologia , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento
19.
J Therm Biol ; 83: 60-68, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31331526

RESUMO

The air-conditioning characteristics in nasal cavity models obtained from two subjects exhibiting different degrees of the nasal cycle states in terms of the airflow partition were investigated using computational fluid dynamics. A constant inspiratory flow rate of approximately 250 mL/s was considered, and the air temperature and relative humidity at the inlet were assumed to be 25 °C and 35%, respectively. The air-conditioning capacities of the congested and decongested sides were assessed by the amounts of epithelial heat and water vapor transferred to the inhaled air through the airway from the nostrils to the end of the septum. The results revealed that the air temperature and relative humidity near the end of the septum, respectively, reached approximately 31.4-32.5 °C and 81.4-88.0% in the decongested sides and 34.0-35.9 °C and 95.3-100% in the congested sides. The differences seen in the air temperatures and relative humidity between the congested and decongested sides were found to be larger in the cavity model that showed a larger degree of reciprocal change in the airflow rate. From a fluid mechanics perspective, while the congested side is in a rest period during the nasal cycle such that a lower amount of airflow is transported through it, this side, in effect, works to provide assistive air-conditioning capacity to the nasal cavity and aids when insufficiently conditioned airflow passes through the decongested side so that the inhaled air merging after the septum can approach the alveolar condition favorably through the nasopharynx.


Assuntos
Simulação por Computador , Hidrodinâmica , Inalação , Cavidade Nasal/fisiologia , Termodinâmica , Adulto , Feminino , Humanos , Umidade , Masculino , Cavidade Nasal/diagnóstico por imagem
20.
Clin Nucl Med ; 44(8): e486-e488, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31274630

RESUMO

Esthesioneuroblastoma is a rare neoplasm arising from the neural crest cells of olfactory epithelium mostly in the nasal vault. We describe the Ga DOTANOC PET/CT findings of a 44-year-old woman who was operated for right nasal mass diagnosed as paraganglioma in the past and then develop a mass in the right nasal cavity after 2 years which upon surgery diagnosed to be esthesioneuroblastoma on histopathology.


Assuntos
Estesioneuroblastoma Olfatório/diagnóstico por imagem , Cavidade Nasal/diagnóstico por imagem , Neoplasias Nasais/diagnóstico por imagem , Compostos Organometálicos , Tomografia Computadorizada com Tomografia por Emissão de Pósitrons , Adulto , Estesioneuroblastoma Olfatório/patologia , Estesioneuroblastoma Olfatório/cirurgia , Feminino , Humanos , Neoplasias Nasais/patologia , Neoplasias Nasais/cirurgia
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